Vacuum cleaner



FIG. 1 is a left side perspective view taken from the front and above of a vacuum cleaner showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right elevational view, the left elevational view being a mirror image thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a rear view thereof. 

The ornamental design for a vacuum cleaner, as shown and described. 